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Finding the Fourth Proportional to 3,455.82, 5,183.73 and 858.75

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Solution

The fourth proportional to 3,455.82, 5,183.73 and 858.75 is: 1,288.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.82 : 5,183.73 = 858.75 : x
  2. Step 2: Convert to fraction form
    3,455.82/5,183.73 = 858.75/x
  3. Step 3: Cross multiply
    3,455.82x = 5,183.73 × 858.75
  4. Step 4: Simplify right side
    3,455.82x = 4,451,528.14
  5. Step 5: Solve for x
    x = 4,451,528.14/3,455.82
  6. Step 6: Final answer
    x = 1,288.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.